(181010) -- HONG KONG, Oct. 10, 2018 -- Dayana Yastremska of Ukraine competes during the singles second round match against Zheng Saisai of China at 2018 Hong Kong Tennis Open in Hong Kong, China, Oct. 10, 2018. Dayana Yastremska won 2-0. ) (SP)CHINA-HONG KONG-TENNIS-HONG KONG OPEN(CN) LoxPingxFai PUBLICATIONxNOTxINxCHN

(181010) -- HONG KONG, Oct. 10, 2018 -- Zheng Saisai of China competes during the singles second round match against Dayana Yastremska of Ukraine at 2018 Hong Kong Tennis Open in Hong Kong, China, Oct. 10, 2018. Zheng Saisai lost 0-2. ) (SP)CHINA-HONG KONG-TENNIS-HONG KONG OPEN(CN) LoxPingxFai PUBLICATIONxNOTxINxCHN

(181010) -- HONG KONG, Oct. 10, 2018 -- Dayana Yastremska of Ukraine competes during the singles second round match against Zheng Saisai of China at 2018 Hong Kong Tennis Open in Hong Kong, China, Oct. 10, 2018. Dayana Yastremska won 2-0. ) (SP)CHINA-HONG KONG-TENNIS-HONG KONG OPEN(CN) LoxPingxFai PUBLICATIONxNOTxINxCHN

(181010) -- HONG KONG, Oct. 10, 2018 -- Zheng Saisai(L) of China reacts during a break of her singles second round match against Dayana Yastremska of Ukraine at 2018 Hong Kong Tennis Open in Hong Kong, China, Oct. 10, 2018. Zheng Saisai lost 0-2. ) (SP)CHINA-HONG KONG-TENNIS-HONG KONG OPEN(CN) LoxPingxFai PUBLICATIONxNOTxINxCHN

(181010) -- HONG KONG, Oct. 10, 2018 -- Dayana Yastremska of Ukraine celebrates during the singles second round match against Zheng Saisai of China at 2018 Hong Kong Tennis Open in Hong Kong, China, Oct. 10, 2018. Dayana Yastremska won 2-0. ) (SP)CHINA-HONG KONG-TENNIS-HONG KONG OPEN(CN) LoxPingxFai PUBLICATIONxNOTxINxCHN